The financial markets of the 10 member countries of the Association of Southeast Asian Nations (ASEAN) are a critical engine to support their transition to a green economy for the benefit of their more than 650 million inhabitants. While the region is directly exposed to the impact of climate change, it is also in huge need of additional capital inflows to support the building of resilient infrastructure projects to accompany the transition to high-income levels of development. Until now, domestic banking systems have provided the necessary capital for the financing of public and private projects, while the development of active debt capital markets generally remains in an early stage of development despite some real progress in some ASEAN members. The attractiveness of the region to investors is built on strong foundations including good credit quality and moderate country risk, the presence of powerful banking institutions, as well as an emerging, yet active, sustainable finance market.